What is a backwash disc water filter?
Water filters play a key role in water treatment systems, and backwash disc water filters are an ideal choice in many application areas due to their high efficiency and automation.
So, what is a backwash disc water filter? What are its working principles, structural characteristics and application areas? This article will analyze this efficient water filtration equipment in detail.
What is a backwash disc water filter?
A backwash disc water filter is a device that uses stacked discs (or discs) for filtration, and achieves water purification through physical interception and automatic backwashing. Its core component is a filter element composed of multiple discs with fine grooves stacked together. When water flows through these discs, suspended particles are trapped on the surface of the discs or between the discs, thereby achieving filtration. The backwash disc water filter removes impurities on the filter element through an automatic backwashing process to maintain the efficient operation of the equipment.
What is the working principle of a backwash disc water filter?
1. Filtration process:
In the filtering state, unfiltered water flows into the inlet of the water filter, passes through the coarse filter (used to intercept larger particles) and enters the disc assembly. When the water flows through the laminated filter element, the suspended particles are trapped in the grooves between the disc surface and the disc, and the filtered clean water flows out from the outlet.
2. Backwashing process:
When the impurities on the filter element accumulate to a certain extent, causing the pressure difference in the filter to exceed the set value, the backwashing process automatically starts. The backwashing process uses an external water source or the filter's own water flow to clean the disc filter element through reverse water flow. The backwashing water flow separates and rotates the discs, flushing away the accumulated impurities, thereby restoring the filtering capacity of the filter element.
Structural features of backwashing disc water filter
1. Disc filter element:
The disc filter element is the core component of the backwashing disc water filter, which is composed of multiple discs with fine grooves stacked together. These discs are usually made of high-strength polymer materials and are corrosion-resistant and wear-resistant. The grooves on the surface of the disc are designed in different shapes and sizes according to the different filtering accuracy, which can effectively intercept suspended particles of different particle sizes.
2. Automatic backwashing device:
The automatic backwashing device is an important component to ensure the continuous and efficient operation of the water filter. When the pressure difference in the filter reaches the set value, the backwashing device automatically starts to clean the disc filter element through reverse water flow to remove accumulated impurities. The backwashing process does not require manual intervention and has a high degree of automation.
3. Coarse filter:
The coarse filter is located at the inlet of the filter and is used to intercept larger particles, protect the disc filter element, and extend its service life. The material of the coarse filter is usually stainless steel, which has good mechanical strength and corrosion resistance.
What are the advantages of backwash disc water filter?
1. High-efficiency filtration:
The disc filter element of the backwash disc water filter has a large specific surface area and a complex groove structure, which can effectively intercept suspended particles of different particle sizes and achieve high-efficiency filtration. The filtration accuracy can be adjusted as needed, usually between 10 and 200 microns.
2. High degree of automation:
The backwash disc water filter is equipped with an automatic backwash device. When the pressure difference in the filter exceeds the set value, the backwash process starts automatically without manual intervention. This not only improves the operating efficiency of the filter, but also reduces the maintenance workload.
3. Strong durability:
The disc filter element and the coarse filter are usually made of high-strength materials that are corrosion-resistant and wear-resistant, and have a long service life. The structural design of the backwash disc water filter is simple and reliable, and it is suitable for harsh working environments.
4. Water and energy saving:
The backwash process of the backwash disc water filter requires less water, usually only 1% to 3% of the filtered water volume, and the backwash time is short, the energy consumption is low, and it has good water and energy saving effects.
What are the application areas of the backwash disc water filter?
1. Agricultural irrigation:
In agricultural irrigation, the water source often contains a large amount of suspended particles, which are easy to clog the irrigation equipment. The backwash disc water filter can effectively remove these particles, protect the irrigation equipment, improve the irrigation efficiency, and ensure the normal growth of crops.
2. Industrial water:
Industrial water has high requirements for water quality. Suspended particles and impurities in the water will affect the operation of production equipment and product quality. Backwash disc water filter can provide high-quality filtered water, protect production equipment, and ensure the stability of production process.
3. Municipal water supply:
In the municipal water supply system, backwash disc water filter can be used in the pretreatment link to remove suspended particles and impurities in the water, improve the efficiency of subsequent treatment processes, and ensure the water quality of water supply.
4. Wastewater treatment:
Backwash disc water filter is also widely used in the wastewater treatment process. It can remove suspended particles in wastewater, reduce the load of subsequent treatment processes, and improve wastewater treatment efficiency.
Selection and installation of backwash disc water filter
1. Selection:
When selecting, it is necessary to comprehensively consider factors such as water source quality, treatment water volume, filtration accuracy and use environment. Different types of backwash disc water filters differ in filtration area, backwash flow rate and filtration accuracy, and need to be selected according to specific needs.
2. Installation:
The installation of the backwash disc water filter should follow the installation manual provided by the manufacturer to ensure that the inlet and outlet pipes are connected correctly and the normal operation of the filter is guaranteed. During the installation process, attention should be paid to the horizontal installation of the filter and the fixing of the pipes to avoid equipment damage or operating failure due to improper installation.
Conclusion of the backwash disc water filter
As an efficient and automated water filtration equipment, the backwash disc water filter has been favored by more and more users due to its excellent filtration performance and wide application fields. Through the combination of physical filtration and automatic backwashing, it can not only provide high-quality filtered water, but also reduce maintenance costs and improve operating efficiency.
Understanding the working principle, structural characteristics and application fields of the backwash disc water filter will help us better select and use this advanced water treatment equipment to ensure water safety and efficient use of resources.